Superman is not an immigrant, he's an alien from another planet that was raised by a common White American family in the mid-west, so he has core American values. He's not a jeet born in Hyderabad that use to shit on the streets and now run your IT department on the ground.

Batman is a billionaire who was deeply affected by crime, and became an orphan, the trauma shaped his personality to use the money his parents left him to become judge and jury of criminals. He also, because he had money, used his money to better himself, keep the companies running and still have money to fight crime. He tried not to kill his victims, but makes them pay the price for their actions.